<template>
  <div class="login">
    <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">流程后台管理系统</h3>
      <el-form-item>
        <el-select v-model="userId" placeholder="请选择用户">
          <el-option v-for="(item, index) in userOptions" :key="index" :label="item.label"
            :value="item.value"></el-option>
        </el-select>
      </el-form-item>

      <!-- <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          size="large"
          auto-complete="off"
          placeholder="账号"
        >
          <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item> -->

      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off" placeholder="密码"
          @keyup.enter="handleLogin">
          <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
        </el-input>
      </el-form-item>

      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
      <el-form-item style="width:100%;">
        <el-button :loading="loading" size="large" type="primary" style="width:100%;" @click.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: right;" v-if="register">
          <router-link class="link-type" :to="'/register'">立即注册</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright © 2024-2026 Antflow All Rights Reserved.</span>
    </div>
  </div>
</template>

<script setup> 
import { ref, onMounted } from 'vue';
import Cookies from "js-cookie";
import { encrypt, decrypt } from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'
import { approveList } from '@/utils/flow/const';
import cache from '@/plugins/cache';
import { ElMessage } from 'element-plus'

const userStore = useUserStore()
const route = useRoute();
const router = useRouter();
const { proxy } = getCurrentInstance();

let userOptions = ref([]);
let userId = ref('1');
let _userName = ref('');
const loginForm = ref({
  username: "admin",
  password: "admin123",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{ required: true, trigger: "blur", message: "请输入您的账号" }],
  password: [{ required: true, trigger: "blur", message: "请输入您的密码" }],
  code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};
const loading = ref(false); 
// 注册开关
const register = ref(false);
const redirect = ref(undefined);

watch(route, (newRoute) => {
    redirect.value = newRoute.query && newRoute.query.redirect;
}, { immediate: true });

watch(userId, (val) => {
  _userName.value = approveList[val]; 
}, { immediate: true });

function handleLogin() {
  if(!userId.value) {
        ElMessage.error("请选择用户");
        return;    
    }  
  cache.session.set('userId', userId.value); 
  cache.session.set('userName', encodeURIComponent(_userName.value));   
  proxy.$refs.loginRef.validate(valid => {  
    if (valid) { 
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {  
        Cookies.set("username", loginForm.value.username, { expires: 30 });
        Cookies.set("password", encrypt(loginForm.value.password), { expires: 30 });
        Cookies.set("rememberMe", loginForm.value.rememberMe, { expires: 30 }); 
      } else {

        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe"); 
      }  
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => { 
        const query = route.query;
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== "redirect") {
            acc[cur] = query[cur];
          }
          return acc;
        }, {});
        router.push({ path: redirect.value || "/", query: otherQueryParams });
      }).catch(() => {
        loading.value = false; 
      });
    }
  }); 
}

onMounted(async () => {
    userId.value = cache.session.get('userId');
    for (let key in approveList) {
        userOptions.value.push({
            label: key + '|' + approveList[key],
            value: key
        })
    }
})

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
} 
getCookie();
</script>

<style lang='scss' scoped>
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}
.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;
  .el-input {
    height: 40px;
    input {
      height: 40px;
    }
  }
  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 0px;
  }
}
.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}
.login-code {
  width: 33%;
  height: 40px;
  float: right;
  img {
    cursor: pointer;
    vertical-align: middle;
  }
}
.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}
.login-code-img {
  height: 40px;
  padding-left: 12px;
}
</style>
